libgo/go/time/format_test.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package time_test
   6
   7 import (
   8         "fmt"
   9         "strconv"
  10         "strings"
  11         "testing"
  12         "testing/quick"
  13         . "time"
  14 )
  15
  16 type TimeFormatTest struct {
  17         time           Time
  18         formattedValue string
  19 }
  20
  21 var rfc3339Formats = []TimeFormatTest{
  22         {Date(2008, 9, 17, 20, 4, 26, 0, UTC), "2008-09-17T20:04:26Z"},
  23         {Date(1994, 9, 17, 20, 4, 26, 0, FixedZone("EST", -18000)), "1994-09-17T20:04:26-05:00"},
  24         {Date(2000, 12, 26, 1, 15, 6, 0, FixedZone("OTO", 15600)), "2000-12-26T01:15:06+04:20"},
  25 }
  26
  27 func TestRFC3339Conversion(t *testing.T) {
  28         for _, f := range rfc3339Formats {
  29                 if f.time.Format(RFC3339) != f.formattedValue {
  30                         t.Error("RFC3339:")
  31                         t.Errorf("  want=%+v", f.formattedValue)
  32                         t.Errorf("  have=%+v", f.time.Format(RFC3339))
  33                 }
  34         }
  35 }
  36
  37 type FormatTest struct {
  38         name   string
  39         format string
  40         result string
  41 }
  42
  43 var formatTests = []FormatTest{
  44         {"ANSIC", ANSIC, "Wed Feb  4 21:00:57 2009"},
  45         {"UnixDate", UnixDate, "Wed Feb  4 21:00:57 PST 2009"},
  46         {"RubyDate", RubyDate, "Wed Feb 04 21:00:57 -0800 2009"},
  47         {"RFC822", RFC822, "04 Feb 09 21:00 PST"},
  48         {"RFC850", RFC850, "Wednesday, 04-Feb-09 21:00:57 PST"},
  49         {"RFC1123", RFC1123, "Wed, 04 Feb 2009 21:00:57 PST"},
  50         {"RFC1123Z", RFC1123Z, "Wed, 04 Feb 2009 21:00:57 -0800"},
  51         {"RFC3339", RFC3339, "2009-02-04T21:00:57-08:00"},
  52         {"RFC3339Nano", RFC3339Nano, "2009-02-04T21:00:57.0123456-08:00"},
  53         {"Kitchen", Kitchen, "9:00PM"},
  54         {"am/pm", "3pm", "9pm"},
  55         {"AM/PM", "3PM", "9PM"},
  56         {"two-digit year", "06 01 02", "09 02 04"},
  57         // Three-letter months and days must not be followed by lower-case letter.
  58         {"Janet", "Hi Janet, the Month is January", "Hi Janet, the Month is February"},
  59         // Time stamps, Fractional seconds.
  60         {"Stamp", Stamp, "Feb  4 21:00:57"},
  61         {"StampMilli", StampMilli, "Feb  4 21:00:57.012"},
  62         {"StampMicro", StampMicro, "Feb  4 21:00:57.012345"},
  63         {"StampNano", StampNano, "Feb  4 21:00:57.012345600"},
  64 }
  65
  66 func TestFormat(t *testing.T) {
  67         // The numeric time represents Thu Feb  4 21:00:57.012345600 PST 2010
  68         time := Unix(0, 1233810057012345600)
  69         for _, test := range formatTests {
  70                 result := time.Format(test.format)
  71                 if result != test.result {
  72                         t.Errorf("%s expected %q got %q", test.name, test.result, result)
  73                 }
  74         }
  75 }
  76
  77 func TestFormatShortYear(t *testing.T) {
  78         years := []int{
  79                 -100001, -100000, -99999,
  80                 -10001, -10000, -9999,
  81                 -1001, -1000, -999,
  82                 -101, -100, -99,
  83                 -11, -10, -9,
  84                 -1, 0, 1,
  85                 9, 10, 11,
  86                 99, 100, 101,
  87                 999, 1000, 1001,
  88                 9999, 10000, 10001,
  89                 99999, 100000, 100001,
  90         }
  91
  92         for _, y := range years {
  93                 time := Date(y, January, 1, 0, 0, 0, 0, UTC)
  94                 result := time.Format("2006.01.02")
  95                 var want string
  96                 if y < 0 {
  97                         // The 4 in %04d counts the - sign, so print -y instead
  98                         // and introduce our own - sign.
  99                         want = fmt.Sprintf("-%04d.%02d.%02d", -y, 1, 1)
 100                 } else {
 101                         want = fmt.Sprintf("%04d.%02d.%02d", y, 1, 1)
 102                 }
 103                 if result != want {
 104                         t.Errorf("(jan 1 %d).Format(\"2006.01.02\") = %q, want %q", y, result, want)
 105                 }
 106         }
 107 }
 108
 109 type ParseTest struct {
 110         name       string
 111         format     string
 112         value      string
 113         hasTZ      bool // contains a time zone
 114         hasWD      bool // contains a weekday
 115         yearSign   int  // sign of year, -1 indicates the year is not present in the format
 116         fracDigits int  // number of digits of fractional second
 117 }
 118
 119 var parseTests = []ParseTest{
 120         {"ANSIC", ANSIC, "Thu Feb  4 21:00:57 2010", false, true, 1, 0},
 121         {"UnixDate", UnixDate, "Thu Feb  4 21:00:57 PST 2010", true, true, 1, 0},
 122         {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 -0800 2010", true, true, 1, 0},
 123         {"RFC850", RFC850, "Thursday, 04-Feb-10 21:00:57 PST", true, true, 1, 0},
 124         {"RFC1123", RFC1123, "Thu, 04 Feb 2010 21:00:57 PST", true, true, 1, 0},
 125         {"RFC1123", RFC1123, "Thu, 04 Feb 2010 22:00:57 PDT", true, true, 1, 0},
 126         {"RFC1123Z", RFC1123Z, "Thu, 04 Feb 2010 21:00:57 -0800", true, true, 1, 0},
 127         {"RFC3339", RFC3339, "2010-02-04T21:00:57-08:00", true, false, 1, 0},
 128         {"custom: \"2006-01-02 15:04:05-07\"", "2006-01-02 15:04:05-07", "2010-02-04 21:00:57-08", true, false, 1, 0},
 129         // Optional fractional seconds.
 130         {"ANSIC", ANSIC, "Thu Feb  4 21:00:57.0 2010", false, true, 1, 1},
 131         {"UnixDate", UnixDate, "Thu Feb  4 21:00:57.01 PST 2010", true, true, 1, 2},
 132         {"RubyDate", RubyDate, "Thu Feb 04 21:00:57.012 -0800 2010", true, true, 1, 3},
 133         {"RFC850", RFC850, "Thursday, 04-Feb-10 21:00:57.0123 PST", true, true, 1, 4},
 134         {"RFC1123", RFC1123, "Thu, 04 Feb 2010 21:00:57.01234 PST", true, true, 1, 5},
 135         {"RFC1123Z", RFC1123Z, "Thu, 04 Feb 2010 21:00:57.01234 -0800", true, true, 1, 5},
 136         {"RFC3339", RFC3339, "2010-02-04T21:00:57.012345678-08:00", true, false, 1, 9},
 137         {"custom: \"2006-01-02 15:04:05\"", "2006-01-02 15:04:05", "2010-02-04 21:00:57.0", false, false, 1, 0},
 138         // Amount of white space should not matter.
 139         {"ANSIC", ANSIC, "Thu Feb 4 21:00:57 2010", false, true, 1, 0},
 140         {"ANSIC", ANSIC, "Thu      Feb     4     21:00:57     2010", false, true, 1, 0},
 141         // Case should not matter
 142         {"ANSIC", ANSIC, "THU FEB 4 21:00:57 2010", false, true, 1, 0},
 143         {"ANSIC", ANSIC, "thu feb 4 21:00:57 2010", false, true, 1, 0},
 144         // Fractional seconds.
 145         {"millisecond", "Mon Jan _2 15:04:05.000 2006", "Thu Feb  4 21:00:57.012 2010", false, true, 1, 3},
 146         {"microsecond", "Mon Jan _2 15:04:05.000000 2006", "Thu Feb  4 21:00:57.012345 2010", false, true, 1, 6},
 147         {"nanosecond", "Mon Jan _2 15:04:05.000000000 2006", "Thu Feb  4 21:00:57.012345678 2010", false, true, 1, 9},
 148         // Leading zeros in other places should not be taken as fractional seconds.
 149         {"zero1", "2006.01.02.15.04.05.0", "2010.02.04.21.00.57.0", false, false, 1, 1},
 150         {"zero2", "2006.01.02.15.04.05.00", "2010.02.04.21.00.57.01", false, false, 1, 2},
 151         // Month and day names only match when not followed by a lower-case letter.
 152         {"Janet", "Hi Janet, the Month is January: Jan _2 15:04:05 2006", "Hi Janet, the Month is February: Feb  4 21:00:57 2010", false, true, 1, 0},
 153
 154         // GMT with offset.
 155         {"GMT-8", UnixDate, "Fri Feb  5 05:00:57 GMT-8 2010", true, true, 1, 0},
 156
 157         // Accept any number of fractional second digits (including none) for .999...
 158         // In Go 1, .999... was completely ignored in the format, meaning the first two
 159         // cases would succeed, but the next four would not. Go 1.1 accepts all six.
 160         {"", "2006-01-02 15:04:05.9999 -0700 MST", "2010-02-04 21:00:57 -0800 PST", true, false, 1, 0},
 161         {"", "2006-01-02 15:04:05.999999999 -0700 MST", "2010-02-04 21:00:57 -0800 PST", true, false, 1, 0},
 162         {"", "2006-01-02 15:04:05.9999 -0700 MST", "2010-02-04 21:00:57.0123 -0800 PST", true, false, 1, 4},
 163         {"", "2006-01-02 15:04:05.999999999 -0700 MST", "2010-02-04 21:00:57.0123 -0800 PST", true, false, 1, 4},
 164         {"", "2006-01-02 15:04:05.9999 -0700 MST", "2010-02-04 21:00:57.012345678 -0800 PST", true, false, 1, 9},
 165         {"", "2006-01-02 15:04:05.999999999 -0700 MST", "2010-02-04 21:00:57.012345678 -0800 PST", true, false, 1, 9},
 166
 167         // issue 4502.
 168         {"", StampNano, "Feb  4 21:00:57.012345678", false, false, -1, 9},
 169         {"", "Jan _2 15:04:05.999", "Feb  4 21:00:57.012300000", false, false, -1, 4},
 170         {"", "Jan _2 15:04:05.999", "Feb  4 21:00:57.012345678", false, false, -1, 9},
 171         {"", "Jan _2 15:04:05.999999999", "Feb  4 21:00:57.0123", false, false, -1, 4},
 172         {"", "Jan _2 15:04:05.999999999", "Feb  4 21:00:57.012345678", false, false, -1, 9},
 173 }
 174
 175 func TestParse(t *testing.T) {
 176         for _, test := range parseTests {
 177                 time, err := Parse(test.format, test.value)
 178                 if err != nil {
 179                         t.Errorf("%s error: %v", test.name, err)
 180                 } else {
 181                         checkTime(time, &test, t)
 182                 }
 183         }
 184 }
 185
 186 func TestParseInLocation(t *testing.T) {
 187         // Check that Parse (and ParseInLocation) understand that
 188         // Feb 01 AST (Arabia Standard Time) and Feb 01 AST (Atlantic Standard Time)
 189         // are in different time zones even though both are called AST
 190
 191         baghdad, err := LoadLocation("Asia/Baghdad")
 192         if err != nil {
 193                 t.Fatal(err)
 194         }
 195
 196         t1, err := ParseInLocation("Jan 02 2006 MST", "Feb 01 2013 AST", baghdad)
 197         if err != nil {
 198                 t.Fatal(err)
 199         }
 200         t2 := Date(2013, February, 1, 00, 00, 00, 0, baghdad)
 201         if t1 != t2 {
 202                 t.Fatalf("ParseInLocation(Feb 01 2013 AST, Baghdad) = %v, want %v", t1, t2)
 203         }
 204         _, offset := t1.Zone()
 205         if offset != 3*60*60 {
 206                 t.Fatalf("ParseInLocation(Feb 01 2013 AST, Baghdad).Zone = _, %d, want _, %d", offset, 3*60*60)
 207         }
 208
 209         blancSablon, err := LoadLocation("America/Blanc-Sablon")
 210         if err != nil {
 211                 t.Fatal(err)
 212         }
 213
 214         t1, err = ParseInLocation("Jan 02 2006 MST", "Feb 01 2013 AST", blancSablon)
 215         if err != nil {
 216                 t.Fatal(err)
 217         }
 218         t2 = Date(2013, February, 1, 00, 00, 00, 0, blancSablon)
 219         if t1 != t2 {
 220                 t.Fatalf("ParseInLocation(Feb 01 2013 AST, Blanc-Sablon) = %v, want %v", t1, t2)
 221         }
 222         _, offset = t1.Zone()
 223         if offset != -4*60*60 {
 224                 t.Fatalf("ParseInLocation(Feb 01 2013 AST, Blanc-Sablon).Zone = _, %d, want _, %d", offset, -4*60*60)
 225         }
 226 }
 227
 228 func TestLoadLocationZipFile(t *testing.T) {
 229         t.Skip("gccgo does not use the zip file")
 230
 231         ForceZipFileForTesting(true)
 232         defer ForceZipFileForTesting(false)
 233
 234         _, err := LoadLocation("Australia/Sydney")
 235         if err != nil {
 236                 t.Fatal(err)
 237         }
 238 }
 239
 240 var rubyTests = []ParseTest{
 241         {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 -0800 2010", true, true, 1, 0},
 242         // Ignore the time zone in the test. If it parses, it'll be OK.
 243         {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 -0000 2010", false, true, 1, 0},
 244         {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 +0000 2010", false, true, 1, 0},
 245         {"RubyDate", RubyDate, "Thu Feb 04 21:00:57 +1130 2010", false, true, 1, 0},
 246 }
 247
 248 // Problematic time zone format needs special tests.
 249 func TestRubyParse(t *testing.T) {
 250         for _, test := range rubyTests {
 251                 time, err := Parse(test.format, test.value)
 252                 if err != nil {
 253                         t.Errorf("%s error: %v", test.name, err)
 254                 } else {
 255                         checkTime(time, &test, t)
 256                 }
 257         }
 258 }
 259
 260 func checkTime(time Time, test *ParseTest, t *testing.T) {
 261         // The time should be Thu Feb  4 21:00:57 PST 2010
 262         if test.yearSign >= 0 && test.yearSign*time.Year() != 2010 {
 263                 t.Errorf("%s: bad year: %d not %d", test.name, time.Year(), 2010)
 264         }
 265         if time.Month() != February {
 266                 t.Errorf("%s: bad month: %s not %s", test.name, time.Month(), February)
 267         }
 268         if time.Day() != 4 {
 269                 t.Errorf("%s: bad day: %d not %d", test.name, time.Day(), 4)
 270         }
 271         if time.Hour() != 21 {
 272                 t.Errorf("%s: bad hour: %d not %d", test.name, time.Hour(), 21)
 273         }
 274         if time.Minute() != 0 {
 275                 t.Errorf("%s: bad minute: %d not %d", test.name, time.Minute(), 0)
 276         }
 277         if time.Second() != 57 {
 278                 t.Errorf("%s: bad second: %d not %d", test.name, time.Second(), 57)
 279         }
 280         // Nanoseconds must be checked against the precision of the input.
 281         nanosec, err := strconv.ParseUint("012345678"[:test.fracDigits]+"000000000"[:9-test.fracDigits], 10, 0)
 282         if err != nil {
 283                 panic(err)
 284         }
 285         if time.Nanosecond() != int(nanosec) {
 286                 t.Errorf("%s: bad nanosecond: %d not %d", test.name, time.Nanosecond(), nanosec)
 287         }
 288         name, offset := time.Zone()
 289         if test.hasTZ && offset != -28800 {
 290                 t.Errorf("%s: bad tz offset: %s %d not %d", test.name, name, offset, -28800)
 291         }
 292         if test.hasWD && time.Weekday() != Thursday {
 293                 t.Errorf("%s: bad weekday: %s not %s", test.name, time.Weekday(), Thursday)
 294         }
 295 }
 296
 297 func TestFormatAndParse(t *testing.T) {
 298         const fmt = "Mon MST " + RFC3339 // all fields
 299         f := func(sec int64) bool {
 300                 t1 := Unix(sec, 0)
 301                 if t1.Year() < 1000 || t1.Year() > 9999 {
 302                         // not required to work
 303                         return true
 304                 }
 305                 t2, err := Parse(fmt, t1.Format(fmt))
 306                 if err != nil {
 307                         t.Errorf("error: %s", err)
 308                         return false
 309                 }
 310                 if t1.Unix() != t2.Unix() || t1.Nanosecond() != t2.Nanosecond() {
 311                         t.Errorf("FormatAndParse %d: %q(%d) %q(%d)", sec, t1, t1.Unix(), t2, t2.Unix())
 312                         return false
 313                 }
 314                 return true
 315         }
 316         f32 := func(sec int32) bool { return f(int64(sec)) }
 317         cfg := &quick.Config{MaxCount: 10000}
 318
 319         // Try a reasonable date first, then the huge ones.
 320         if err := quick.Check(f32, cfg); err != nil {
 321                 t.Fatal(err)
 322         }
 323         if err := quick.Check(f, cfg); err != nil {
 324                 t.Fatal(err)
 325         }
 326 }
 327
 328 type ParseTimeZoneTest struct {
 329         value  string
 330         length int
 331         ok     bool
 332 }
 333
 334 var parseTimeZoneTests = []ParseTimeZoneTest{
 335         {"gmt hi there", 0, false},
 336         {"GMT hi there", 3, true},
 337         {"GMT+12 hi there", 6, true},
 338         {"GMT+00 hi there", 3, true}, // 0 or 00 is not a legal offset.
 339         {"GMT-5 hi there", 5, true},
 340         {"GMT-51 hi there", 3, true},
 341         {"ChST hi there", 4, true},
 342         {"MeST hi there", 4, true},
 343         {"MSDx", 3, true},
 344         {"MSDY", 0, false}, // four letters must end in T.
 345         {"ESAST hi", 5, true},
 346         {"ESASTT hi", 0, false}, // run of upper-case letters too long.
 347         {"ESATY hi", 0, false},  // five letters must end in T.
 348 }
 349
 350 func TestParseTimeZone(t *testing.T) {
 351         for _, test := range parseTimeZoneTests {
 352                 length, ok := ParseTimeZone(test.value)
 353                 if ok != test.ok {
 354                         t.Errorf("expected %t for %q got %t", test.ok, test.value, ok)
 355                 } else if length != test.length {
 356                         t.Errorf("expected %d for %q got %d", test.length, test.value, length)
 357                 }
 358         }
 359 }
 360
 361 type ParseErrorTest struct {
 362         format string
 363         value  string
 364         expect string // must appear within the error
 365 }
 366
 367 var parseErrorTests = []ParseErrorTest{
 368         {ANSIC, "Feb  4 21:00:60 2010", "cannot parse"}, // cannot parse Feb as Mon
 369         {ANSIC, "Thu Feb  4 21:00:57 @2010", "cannot parse"},
 370         {ANSIC, "Thu Feb  4 21:00:60 2010", "second out of range"},
 371         {ANSIC, "Thu Feb  4 21:61:57 2010", "minute out of range"},
 372         {ANSIC, "Thu Feb  4 24:00:60 2010", "hour out of range"},
 373         {"Mon Jan _2 15:04:05.000 2006", "Thu Feb  4 23:00:59x01 2010", "cannot parse"},
 374         {"Mon Jan _2 15:04:05.000 2006", "Thu Feb  4 23:00:59.xxx 2010", "cannot parse"},
 375         {"Mon Jan _2 15:04:05.000 2006", "Thu Feb  4 23:00:59.-123 2010", "fractional second out of range"},
 376         // issue 4502. StampNano requires exactly 9 digits of precision.
 377         {StampNano, "Dec  7 11:22:01.000000", `cannot parse ".000000" as ".000000000"`},
 378         {StampNano, "Dec  7 11:22:01.0000000000", "extra text: 0"},
 379         // issue 4493. Helpful errors.
 380         {RFC3339, "2006-01-02T15:04:05Z07:00", `parsing time "2006-01-02T15:04:05Z07:00": extra text: 07:00`},
 381         {RFC3339, "2006-01-02T15:04_abc", `parsing time "2006-01-02T15:04_abc" as "2006-01-02T15:04:05Z07:00": cannot parse "_abc" as ":"`},
 382         {RFC3339, "2006-01-02T15:04:05_abc", `parsing time "2006-01-02T15:04:05_abc" as "2006-01-02T15:04:05Z07:00": cannot parse "_abc" as "Z07:00"`},
 383         {RFC3339, "2006-01-02T15:04:05Z_abc", `parsing time "2006-01-02T15:04:05Z_abc": extra text: _abc`},
 384 }
 385
 386 func TestParseErrors(t *testing.T) {
 387         for _, test := range parseErrorTests {
 388                 _, err := Parse(test.format, test.value)
 389                 if err == nil {
 390                         t.Errorf("expected error for %q %q", test.format, test.value)
 391                 } else if strings.Index(err.Error(), test.expect) < 0 {
 392                         t.Errorf("expected error with %q for %q %q; got %s", test.expect, test.format, test.value, err)
 393                 }
 394         }
 395 }
 396
 397 func TestNoonIs12PM(t *testing.T) {
 398         noon := Date(0, January, 1, 12, 0, 0, 0, UTC)
 399         const expect = "12:00PM"
 400         got := noon.Format("3:04PM")
 401         if got != expect {
 402                 t.Errorf("got %q; expect %q", got, expect)
 403         }
 404         got = noon.Format("03:04PM")
 405         if got != expect {
 406                 t.Errorf("got %q; expect %q", got, expect)
 407         }
 408 }
 409
 410 func TestMidnightIs12AM(t *testing.T) {
 411         midnight := Date(0, January, 1, 0, 0, 0, 0, UTC)
 412         expect := "12:00AM"
 413         got := midnight.Format("3:04PM")
 414         if got != expect {
 415                 t.Errorf("got %q; expect %q", got, expect)
 416         }
 417         got = midnight.Format("03:04PM")
 418         if got != expect {
 419                 t.Errorf("got %q; expect %q", got, expect)
 420         }
 421 }
 422
 423 func Test12PMIsNoon(t *testing.T) {
 424         noon, err := Parse("3:04PM", "12:00PM")
 425         if err != nil {
 426                 t.Fatal("error parsing date:", err)
 427         }
 428         if noon.Hour() != 12 {
 429                 t.Errorf("got %d; expect 12", noon.Hour())
 430         }
 431         noon, err = Parse("03:04PM", "12:00PM")
 432         if err != nil {
 433                 t.Fatal("error parsing date:", err)
 434         }
 435         if noon.Hour() != 12 {
 436                 t.Errorf("got %d; expect 12", noon.Hour())
 437         }
 438 }
 439
 440 func Test12AMIsMidnight(t *testing.T) {
 441         midnight, err := Parse("3:04PM", "12:00AM")
 442         if err != nil {
 443                 t.Fatal("error parsing date:", err)
 444         }
 445         if midnight.Hour() != 0 {
 446                 t.Errorf("got %d; expect 0", midnight.Hour())
 447         }
 448         midnight, err = Parse("03:04PM", "12:00AM")
 449         if err != nil {
 450                 t.Fatal("error parsing date:", err)
 451         }
 452         if midnight.Hour() != 0 {
 453                 t.Errorf("got %d; expect 0", midnight.Hour())
 454         }
 455 }
 456
 457 // Check that a time without a Zone still produces a (numeric) time zone
 458 // when formatted with MST as a requested zone.
 459 func TestMissingZone(t *testing.T) {
 460         time, err := Parse(RubyDate, "Thu Feb 02 16:10:03 -0500 2006")
 461         if err != nil {
 462                 t.Fatal("error parsing date:", err)
 463         }
 464         expect := "Thu Feb  2 16:10:03 -0500 2006" // -0500 not EST
 465         str := time.Format(UnixDate)               // uses MST as its time zone
 466         if str != expect {
 467                 t.Errorf("got %s; expect %s", str, expect)
 468         }
 469 }
 470
 471 func TestMinutesInTimeZone(t *testing.T) {
 472         time, err := Parse(RubyDate, "Mon Jan 02 15:04:05 +0123 2006")
 473         if err != nil {
 474                 t.Fatal("error parsing date:", err)
 475         }
 476         expected := (1*60 + 23) * 60
 477         _, offset := time.Zone()
 478         if offset != expected {
 479                 t.Errorf("ZoneOffset = %d, want %d", offset, expected)
 480         }
 481 }
 482
 483 type SecondsTimeZoneOffsetTest struct {
 484         format         string
 485         value          string
 486         expectedoffset int
 487 }
 488
 489 var secondsTimeZoneOffsetTests = []SecondsTimeZoneOffsetTest{
 490         {"2006-01-02T15:04:05-070000", "1871-01-01T05:33:02-003408", -(34*60 + 8)},
 491         {"2006-01-02T15:04:05-07:00:00", "1871-01-01T05:33:02-00:34:08", -(34*60 + 8)},
 492         {"2006-01-02T15:04:05-070000", "1871-01-01T05:33:02+003408", 34*60 + 8},
 493         {"2006-01-02T15:04:05-07:00:00", "1871-01-01T05:33:02+00:34:08", 34*60 + 8},
 494         {"2006-01-02T15:04:05Z070000", "1871-01-01T05:33:02-003408", -(34*60 + 8)},
 495         {"2006-01-02T15:04:05Z07:00:00", "1871-01-01T05:33:02+00:34:08", 34*60 + 8},
 496 }
 497
 498 func TestParseSecondsInTimeZone(t *testing.T) {
 499         // should accept timezone offsets with seconds like: Zone America/New_York   -4:56:02 -      LMT     1883 Nov 18 12:03:58
 500         for _, test := range secondsTimeZoneOffsetTests {
 501                 time, err := Parse(test.format, test.value)
 502                 if err != nil {
 503                         t.Fatal("error parsing date:", err)
 504                 }
 505                 _, offset := time.Zone()
 506                 if offset != test.expectedoffset {
 507                         t.Errorf("ZoneOffset = %d, want %d", offset, test.expectedoffset)
 508                 }
 509         }
 510 }
 511
 512 func TestFormatSecondsInTimeZone(t *testing.T) {
 513         for _, test := range secondsTimeZoneOffsetTests {
 514                 d := Date(1871, 1, 1, 5, 33, 2, 0, FixedZone("LMT", test.expectedoffset))
 515                 timestr := d.Format(test.format)
 516                 if timestr != test.value {
 517                         t.Errorf("Format = %s, want %s", timestr, test.value)
 518                 }
 519         }
 520 }